Slate Roof Weights

Per square smaller roofing slates actually weigh more than larger slates and come in at around 800lbs square while larger slates 12 24 weigh about 700lbs square.

Slate roof weights.

These are the weights of typical actual products. Not only for the building s structural integrity but shipping costs labour installation costs and lead times will play a big factor. When ordering a slate s thickness considering the weight should be top priority. Some markets such as california and texas prefer a lighter weight slate roof.

The weights of other actual products of the same type may vary. Weight per square metre. Weight will very with thickness of the slate. Average weight for one square of 1 4 thick roofing slate is 800lbs.

Weight of roofing materials. 500 x 250mm slate 4 5mm thick 1 889 kg x 18 8 at 75mm lap 35 51kg per square metre. Ft kilograms per square meter kg m 2 source. Pounds per square foot lb ft 2 pounds per square 100 sq.

To calculate the weight per square metre simply multiply the weight per slate given below by the number of slates per square metre for the same slate listed above. Slate sizes can start as small as 6 12 inches and be as large as 16 24.